Hello I got ASRock H110 Pro BTC+, 10 gtx 1060, connected via risers and ive checked the connections and everything... I got 2 GPUS generally having less Mh.s anyone got any tips how to fix this?
Check picture
https://imgur.com/a/00fwwOC, Silicon Lottery, Power Delivery

So many possibilities.
Start checking first that your PSU can delivery enought and bit more power specially if you have OC on.